A missile is launched with a speed of 75 ms-1 at an angle of 22° above the surface of a warship. Find the horizontal range achieved by the missile. Ignore the effects of air resistance.

A missile is launched with a speed of 75 ms-1 at an angle of 22° above the surface of a warship. Find the horizontal range achieved by the missile. Ignore the effects of air resistance.

[Take g = 10 ms-1]
A. 195
B. 271 m
C. 391 m
D. 136 m

Correct Option: Answer is C
U= 75 ms−1 =22º, g= 10 ms−2 , R=?

R= U2sin2θ/g

⇒R= 752× sin2(22)/10

⇒R= 5625×sin44/10
⇒R= 5625×0.6947/10

⇒R= 3907.69/10 = 391m

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